Heavy Equipment Operator Certification Exam Prep · Question
For a soil with a high clay content, requiring significant kneading and manipulation for compaction, which type of compactor is generally most effective?
Padfoot (sheepsfoot) rollers are specifically designed with protrusions that knead and compact cohesive soils (like clay) from the bottom up, breaking down clod
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Question: For a soil with a high clay content, requiring significant kneading and manipulation for compaction, which type of compactor is generally most effective?
Answer options:
- Smooth drum vibratory compactor
- Pneumatic tire roller ✅ Padfoot (sheepsfoot) roller
- Grid roller
Correct answer: Padfoot (sheepsfoot) roller
Explanation: Padfoot (sheepsfoot) rollers are specifically designed with protrusions that knead and compact cohesive soils (like clay) from the bottom up, breaking down clods and achieving higher density.
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